Ive open a new thread cause I have to return the phone tomorrow to his owner, and I would like to try to restore this curve 8520 to its factory default settings (it came with OS 4.3)

If someone knows a link or any site where I could find these two binaries I´d be really thankfull

I would like to try as well other options. From what Ive readen (and I´ve readen a loooooot about this problem, the "device initialization" in the app loader process), only some people who tried desktop software 4.3 and / or device software 4.3 (for 8520) have had some results in this situation